Air-compressor



(Model.)

J, KNQGHE,V AIR COMPRESSOR.

Patented Nov. 7, 1893.

2 Sheets-Sheet 4l.

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2 Sheets Sheet 2.

Patented Nov. '7. 1893.

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J. KNOOHE.

AIR COMPRESSOR. No. 508,225.

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ixirtla'zr) STATES PATENT OFFICE.

JOHN KNOCHE, OF CINCINNATI, OHIO.

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SPECIFICATION forming part of Letters Patent No. v508,225. datedNovember 7, 1893.

' Application ined June 27,1892. Seriana 438.172. (Model.)

Be it known that I, JOHN KNooHE, a citizen of the United States, and avresident of Cincinnati, in the county of Hamilton and State of,Ohio,have invented certain new and useful Improvements in Air Compressors, ofwhich the followingis a specification.

ll/IyV invention relates to air compressors, and particularly. to thatclass employed for forcing a pressure of air into a closed vessel, tosupply the vacuum caused by drawing the liquor out of the vessel, and toforce the liquorY from afaucet arranged above the vessel. It isespecially designed to force malt liquors' from a cellar or basementptothetap room above.

The invention consists of the peculiar combinations and arrangementsofthe device, all of which will be first fully described in connectionwith the accompanying drawings and then particularly referred to andpointed out in the claims. Y

In the drawings, Figure l is a vertical diametrical section ofv myimproved apparatus, with the plunger drawn upto itshighest position.Fig. 2 is a similar sectionshowing the cylinders partly telescoped,`withthe air inlet an'd'outlet pipes, and the valve for said pipes shown insection and at aright angle to the view shown in Fig. l. Fig. 3 is aview in the same plane showing the cylinders wholly telescoped. Fig. 4is'a'detailed view in transverse section taken through line new of Fig.2, some of the parts ,being omitted for clearncss. Fig. 5 is a detailedview in central vertical section taken in plane at right angles to viewsshown in Figs. l, 2 and 3.

Referring to the parts by reference letters, A is a cast metal base inthe form of an inverted pan, but the form is not material as its officeis only to elevate the compressor above the floor. B is a sheet metalcylinder closed at the bottom. C a cylinder fitted to slide within thecylinder B. It is entirely open at the top and the bottom edge isinturnedforming a ange c, to support a fixed standard D, whichhas feetd, extending outwardly from it to rest upon and be secured to saidflange o. A followerE preferably of cast metal is fitted to slide withinthe cylinder C. The follower E, is centrally perforated to receive thescrew threaded collar of a rectangular box F, the iiange fof whichrests-against the under side of the follower. A nutf is screwed over thecollar to rigidly clamp the follower between it and the flange f. 'lhejoint between the parts is made air tight by neat fitting, or suitablepacking e as seen iu'Figs. 2 and The top of thebox F, has also acircular screw threaded collar, to receive a screw threaded cap j"2'which has a ringf3 to which the winding rope]c4 is secured.

Gis a cylinder within the lowervedge of which vis secured a cast metalring g. The ring g has up'wardly'projecting perforated lugs g to passthe screws which secure the ringwithin the cylinder. The chamberformedbythe cylinders B. C. and follower E is made air tight by the rubbertube H, the lower end y of which is slipped around the top of thecylinder B, and is held in place by a ianged metal hoop or ring b. Theupper end -of the tube is drawn over the top of the cylinder C, lapsupon the top of the follower E, and is firmly clamped between the top ofthe follower and the ring g, by screws passing through the ring andtube, and. tapped into the follower, thus securing the'cylinder G uponthe follower E. The rubber tube is protected by a cylinder I, the loweredge of which rests upon the {iange of ring b. In the upper edge of thecylinder'I, i'ysi'journaled a windlass J, to wind up the rope f4, andextend the parts as shown in the drawings.

Secured to the bottom of the vessel B are two parallel bars K formedpreferably by bending a metal barin the middle, which bars extendthrough guide lugs d in the feet or base of the standard D. Around theends of the bars K which extend into the Vessel C is secured arectangular loop lo. The standard D is slotted at each end toreceivepulleys (Z2 which are journaled between the lugs formed by slotting thebar. The endless chain L passes over these pulleys and is secured by ascrew Z, to a lug projecting down from the fiangef, and by a screw Z tobox or loop k, which braces the bars K apart at the top. The bar D isgrooved upon each edge to embed the chain and prevent it from rubbingagainst the sides of the box F, as the follower descends into the vesselC. The purpose of connecting the chain respectively to the follower andthe standards K, is to insure a si- ICO multaneous movement of thefollower and vessel C when they are bein g carried down by weight Mplaced upon the follower or extended to the position shown by windingthe rope around the wndlass.

A pipe N, is connected to the bottom ofthe vessel B, and extends up tonear the top of the device, and at its end is provided with a three-waycock 0, which has two branches P. P. connected to its case; the one P,for attaching a pipe or flexible tube which connects with the air spacein a liquid vessel, and the other P opens to the air, or may beconnected to the ordinary air filteringvessel, or a refrigeratingchamber in order to supply the compressor with pure or cold air to beforced into the liquor keg or barrel. q

In the drawings the parts are shown in the elevated position, thecompressor filled with air and the cock N, turned to open communicationbetween the compressor and the vessel from which liquor is to be drawn.The air pressure is regulated by placing the desired number of weightsas M in the vesselG upon the compressor E. When the faucetin the taproom is opened, the-beer, ale or other liquor is forced with thepressure exerted by the weight of the follower, weights upon it, and theweight of the cylinder C, and the pressure will remain constant untilthe follower and cylinder C reach the lower limit of their travel. Asthe cylinder C and follower E are fitted to slide freely in theirdescent some air will escape into the space between the rubber tube andthe vessel C forming an air cushion between the parts which will preventthe tube from being injured by rubbing on the metal. When the followerand cylinder C, have reached the limit of their descent, the cock 0 isturned to out off communication with the liquid vessel, and opencommunication through the branch P between the atmosphere and thecylinder B. While the follower and the cylinder Q are being againelevated by means of the windlass, air will be drawn into the compressoruntil the follower and the cylinder t), reach the upper limit of theirtravel, when the cock is again turned to allow the compressed air toflow into the liquor vessel. l

It is obvious that instead of thc three way cock O and branch P aseparate air pipe may be attached to the air chamber and be providedwith an inwardly opening check valve or both the air inlet and outletpipes maybe provided with straight-way cocks.

What I claim is- 1. In an air compressorof the character de scribed, thecombination of the xed vessel, a cylinder fitted to slide therein, afollower fitted to slide within said cylinder, a flexible air tight tubehaving one end connected to the fixed vessel and its opposite endpassing over the sliding cylinder and secured upon the follower, airinlet and outlet pipes, valves for said pipes, and means such as shownto elevate the follower and sliding cylinder, substantially as shown anddescribed.

2. The combination of the fixed vessel, the sliding cylinder C thefollower within said cylinder, the bar D centrally fixed within saidcylinder, the guide bars K, centrally secured to the bottom ot' thefixed vessel and extending up upon each side of the bar D, the pulleysjournaled in each end of said bar, the chain passing around said pulleysand secured respectively tothe bars K, and the follower the box Fsecured to the follower, the rope connected to the top of said box, thewindlass for elevating the follower and cylinder, the pipe N, the threeway cock, the branches P, P', and the flexible tube having its oppositeends connected to the fixed vessel, and the follower respectively,substantially as shown and described.

3. The combination of the fixed vessel the sliding cylinder the followerfitted to'slide within said cylinder, the fiexible tube, the flangedring connecting the lower end of said flexible tube to the fixed vessel,the vessel G and ring g, secured,V upon the follower and clamping theupper Vend of said tube, the outer cylinder I resting upon the fiangedring, the windlass journaled in the upper edge of the cylinder I, andthe windlass rope connected to the follower,substantially as shown anddescribed.

4. The combination of the fixed vessel B having central uprights K, thesliding cylinder O having central upright D, pulleys in each end of saidupright, and a chain around said pulleys, the follower E, the box F,having tiangef, and nutf securing it centrally to the follower, andprovided at its top with a cap and ring, the rubber tube H, the rings b,and g, secu-ring its opposite ends, to the vessel and the followerrespectively the screws connecting the chain to the follower andstandard K, the cylinder I resting upon the ring b and having a windlassin its upper end for elevating the follower and sliding cylinder, thecylinder G connected to ring g removable weights and the valved inlet,and outlet, pipes substantially as shown and described.

.IOHN KNOCHE.

IIO

